Standard No.:	GB/T 1098-2003
English Name:	Woodruff keyways
Chinese Name:	半圆键 键槽的剖面尺寸
Chinese Classification:	J18    Chain drive, belt drive and key joint
Professional Classification:	GB    National Standard
ICS Classification:	21.120.30 21.120.30    Keys and keyways, splines 21.120.30
Source Content Issued by:	AQSIQ
Issued on:	2003-6-5
Implemented on:	2004-2-1
Status:	valid
Superseding:	GB/T 1098-19791990
Target Language:	English
File Format:	PDF
Word Count:	1500 words
Translation Price(USD):	115.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the cross-sectional dimensions of keyways of ordinary and flat-type woodruff keys with a width of b=1 mm~10 mm. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. GB/T 1031 Surface roughness - Parameters and their values (neq ISO 468:1982) GB/T 1099.1 Woodruff keys - Normal form GB/T 1184-1996 Geometrical tolerancing - Geometrical tolerance for features without individual tolerance indications (eqv ISO 2768-2:1989) 3 Dimensions and tolerances See Figure 1 and Table 1 for the cross-sectional dimensions and tolerances of keyways of woodruff keys.

Foreword i 1 Scope 2 Normative references 3 Dimensions and tolerances 4 Technical conditions